| abstract |
(57) [Problem] To provide a polymer flocculant exhibiting an excellent dehydration rate for dehydrating organic sludge generated by treating microorganisms such as sewage and night soil. SOLUTION: The radical polymerizable (meth) acrylic monomer (m) having a primary amine base is composed of a vinyl-based water-soluble polymer (A) having an essential unit. The colloid equivalent values at H4, 7, 10 are a, When b and c are set, b / a = 0.1 to 0.5 and c / A polymer flocculant, wherein a = 0 to 0.1. |